
1
1605fc
LTC1605
TYPICAL APPLICATIO
U
DESCRIPTIO
U
APPLICATIO S
U
FEATURES
16-Bit, 100ksps,
Sampling ADC
The LTC
1605 is a 100ksps, sampling 16-bit A/D con-
verter that draws only 55mW (typical) from a single 5V
supply. This easy-to-use device includes sample-and-
hold, precision reference, switched capacitor successive
approximation A/D and trimmed internal clock.
The LTC1605’s input range is an industry standard
±10V.
Maximum DC specs include
±2.0LSB INL and 16-bits no
missing codes over temperature. An external reference
can be used if greater accuracy over temperature is
needed.
The ADC has a microprocessor compatible, 16-bit or two
byte parallel output port. A convert start input and a data
ready signal (BUSY) ease connections to FIFOs, DSPs and
microprocessors.
■ Single 5V Supply
■ Bipolar Input Range:
±10V
■
Power Dissipation: 55mW Typ
■ Guaranteed No Missing Codes
■ Sample Rate: 100ksps
■
Integral Nonlinearity:
±2.0LSB Max
■ Signal-to-Noise Ratio: 86dB Typ
■ Operates with Internal or External Reference
■
Internal Synchronized Clock
■ Improved 2nd Source to ADS7805 and AD976
■ 28-Pin 0.3” PDIP, SSOP and SW Packages
■ Industrial Process Control
■
Multiplexed Data Acquisition Systems
■ High Speed Data Acquisition for PCs
■ Digital Signal Processing
Low Power, 100kHz, 16-Bit Sampling ADC on 5V Supply
4k
20k
200
REFERENCE
4k
10k
16-BIT
SAMPLING ADC
D15 TO D0
33.2k
2.2
F
10
F
0.1
F
2.2
F
±10V
INPUT
VIN
CAP
REF
AGND1
1
4
3
2
AGND2
5
DGND
14
CONTROL
LOGIC AND
TIMING
BUSY
BYTE
CS
R/C
28
27
6 TO 13
15 TO 22
26
25
24
23
DIGITAL
CONTROL
SIGNALS
1605 TA01
16-BIT
OR 2 BYTE
PARALLEL
BUS
5V
VDIG VANA
BUFFER
Typical INL Curve
CODE
0
INL
(LSBs)
65535
1605 TA02
16384
32768
49152
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.